I always turned off wifi and all networking, to increase speed and stability on my old gig rig. But many years ago I had a rehearsal where Cantabile kept freezing. Afterwards I figured out it was AVG Antivirus trying to constantly update… it just so happened the schedule for that was in the evening.
To this day I still turn off all networking out of caution, even though my PCs are fast enough without. Windows Defender and Antivirus are off too, and I only go online for necessary music software updates. Check Brad’s Glitch Free guide, I think he recommends all networking to be off as well. Glad you found the issue, when gigging you don’t want to be worrying about your gear.
Tom